In a flurry of new activity, Justice Department prosecutors in the last several weeks have begun interviewing witnesses and contacting lawyers to schedule additional questioning related to the Podesta Group and Mercury Public Affairs, the people familiar with the inquiry said. They spoke to The Associated Press on condition of anonymity because they were not authorized to discuss the ongoing work.

The New York work underscores the broad effects of Mueller’s investigation, extending well beyond the central question of President Donald Trump and collusion. Mueller has made clear he will not turn away if he discovers alleged crimes outside the scope of his inquiry; instead, he refers them out in investigations that may linger on even after the special counsel’s work concludes. Other Justice Department referrals from Mueller have ended in guilty pleas, including the hush money payment case of Trump’s former lawyer Michael Cohen.

We reported months ago that the Manafort indictment would actually be a cause of concern for the Podesta group.